678289834 has 16 divisors (see below), whose sum is σ = 1080556416. Its totient is φ = 318225600.

The previous prime is 678289831. The next prime is 678289867. The reversal of 678289834 is 438982876.

678289834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (678289831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18882 + ... + 41389.

It is an arithmetic number, because the mean of its divisors is an integer number (67534776).

Almost surely, 2^678289834 is an apocalyptic number.

678289834 is a deficient number, since it is larger than the sum of its proper divisors (402266582).

678289834 is a wasteful number, since it uses less digits than its factorization.

678289834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60621.

The product of its digits is 4644864, while the sum is 55.

The square root of 678289834 is about 26043.9980417754. The cubic root of 678289834 is about 878.6281284515.

The spelling of 678289834 in words is "six hundred seventy-eight million, two hundred eighty-nine thousand, eight hundred thirty-four".